The National Environment Protection Measure standard for particulate matter in air sized less than 10 micrometres in diameter of 50 micrograms per cubic metre averaged over one day was exceeded 10 times at one or more sites during the monitoring period.
Of those exceedances, six were recorded at the Point Samson air quality monitoring station (AQMS) located 500 metres north-west of the Point Samson community.
The PM10 National Environment Protection Measure exceedances were all caused by region-wide events but each had some contribution from Pilbara Iron Pty Ltd’s Cape Lambert operations.
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